Shoe for brakes



May 29, 1928.

L. E. LA BRIE SHOE FOR BRAKES Filed June 10, 1926 F/QZ lNVENTOR TTORNEY Luoegga E.LA BRIE W/////////// lllz/ZI/IMV/I/l/ Patented May 29, 1928,

UNITED STA res riuuezurv oi-rlci-z'.

n Y LUDGER LA BRIE, OF SOUTH BEND, INDIANA, AS SIGN'OB To BENDIX BRAKE COM- PANY, OF CHICAGO, ILLINOIS,

A CORPORATION OF ILLINOIS.

SHOE FOB BRAKE Application fled June 10,

his invention relates to brake shoes and is illustrated as embodied in novel shoes for an, internal expanding automobile brake. An object of the invention is to form a very rigid trussed shoe construction permitting the use of pressed sheet metal of relatively light gauge. In one desirable arrangement the shoe comprises two sections, each including a stiffening portion forming half the stifiening web of, the shoe and integrally flange forming part of the connected at the outer side edge'ot the friction face of the shoe with a cylindrical friction face, the two sections being arranged face to tace and secured together, preferably with the two cylindrical flanges engaging each other edge to edge. I prefer, in making vthe heavier shoes to include a reinforcing member between thestwo stiffening 'theabove-described sections and engaging ally of triangular section,

the inner face of the cylindrical flanges, this member'being of channel section when it is desired -to provide spaced stiffening webs which. may straddle part of an adjacent shoe. To get the utmost rigidity, the portions of the stampings connecting the stiffening portions may be inclined and diverged from each other to give a shoe construction generi. e. the shoe body. is-hollow, with the stiffening portions forming thes'ides of the hollow body.

"Other features of the invention relate to novel means of securing spaced pivot beari1igs-for the shoes, and to the formation of novel seats for the lining rivets, and to other novel and desirable constructions which will be apparent from the following description of the illustrative embodiments shown in the'accomp'anying drawings, in which:

Figure 1 is a vertical section through the brake just inside the head otthe brake drum and showing the brake shoes in side clcva-- tron; ,Flglllt,

'2-2 of Figure 1 showing the overlappedanchored ends of two of the shoes;

Figure 3 is a partial section on the line 3--3 of Figure 1 and showing-the pivotal connection between two of the shoes;

Figure 4 is a section through one of the end shoes on the line 4'-4 of Figure 1;

ors 5 is rough the central 1 n the time ti portions of! 2 is a partial section on the line 1m. sci-m Io, 114,014.

Figure 6 is a section through an; end shoe ut showing a ing two stifiening webs spacedapart from each other and at opposite ends of the-shoe arranged to straddle the endsof shoes 14 and 18; Shoe 16 is anchored on the back ing plate by carried by thebackin'g plate and passing through a relatively large opening 22 in the stiffening web of the shoe 14. Shoes 14 and 18 are pivotally connected to the shoe 16 by pivots 24 and 26, the pivot 26 being shown with a relatively large spacing portion or head 28 slidably engaging '12 and the pivot 24 being shown grooved at one end to interlock with a grooved eccentric sto 30. v

The rake may be applied by suitable The shoe 16 being mounted on a pivot 20 the backing plate ITIGKIISSllCll as a double cam 32 arranged to stamping is the mirror image ofthe'other) and each of which includes *a cylindrical flange 40 and a radial stiffening portion or web 42 integrallyconncctedwith the flange 40 along, the side edge of the friction face of are similar except thatthe one the shoe by a connecting portion-44 which is preferably inclined in such; at'm'anner that the portions'44 .of the two shoe'se ctions diverge from each other togiveahollow shoe section illustrated as being'substantially'trh angular in form. Where the utmost strength is required. aseparate reinforcing member as a plate 46 may be arranged between and engaging and extending lengthwise of the shoe. The

inclined portions 44 are pressed down at inflanges 40 for vstampmgs ship instead of in engagement edge to edge.

tervals toward the inside surfaces of the the lining rivets or other fastenings 48.

The central shoe 16 is of the same general constructio as that described above except that the reinforcing member is in the form of a curved channel 50 arranged betweenthe webs 142 to form two spaced stiffening webs and having the bottom of the channel projecting across the joint between the two flanges 40 su porting the brake lining 52 and arrange edge' to edge as described above. I I

If preferred, and as shown in Figure 6, thecstiffening member.46 may be omitted and the cylindrical flanges 240 and 241 of the two arranged inoverlapping relation- The inclined bracing portion 44 in Figure 6 will be pressed down at intervals for the lining rivets 48 the same as for the shoes 14 and 18. a

It will be observed that this type of shoe may be regarded as built up of two separately-formed concave parts facing toward each other and secured together by inner and outer joints extending lengthwise of the shoe.

In order to provide a firm support on the pivots 20, 24, and 26, I prefer to form the stiffening webs of the shoes as made up by the above-described stiffening portions or webs with openings sleeved, on the pivots, and dished washers 54 welded to the sides of the stiffening webs,'t hus giving a pair of spaced bearings'for the pivot at each of the points where one of the ivots passes through one of the stiffening we s.

Vhile several illustrative shoe constructions have been described in detail, it'is not my intention to limit the scope of the invention to those particular constructions or otherwise than by the terms of the appended claims. v c

I claim:

1. A brake shoe comprising two separatelyformed .parts, each having a cylindrical flange integrally continued along one edge to form a sti ening portion-offset toward the central plane of the shoe, and which are arranged facing each other with said edges formin the opposite side edges of the shoe.

2. Airake shoe comprising two separatelyformed parts, each having a cylindrical flange integrally continued along one edge to form a stiffening portion arranged at its inner edge centrally of the shoe, and which are arranged facing each other with said edges nor 1,729

forming the op the cylindrical fenin ortions a 3. rake shoe comprising two separately formed parts, each having a cylindrical site side edges of the shoe, anges and the opfislte st fi forming a hollow shoe boci flange integrally continued along one edge the opposite side edges of the shoe, I

secured together ong one edge to form a sti enmg portion between the edges of the shoe and an inclined bracing portion connecting the flange and said portion and which are arranged facing each other with said edges formin the opposite side edges of the shoe, toget er with means securing the stiffening portions together to stiffening web projecting inwardly shoe.

5. A brake shoe comprising two symmetri of the form a cal parts, each having a cylindrical flange integrally continued along one ed e to form a stiffening portion between the ed shoe, and which are secured together facing each other with said edges forming the opposite {side edges of the shoe.

6. A'kbrake shoe comprising two parts, each ha ing a cylindrical flange integrally continued along one edge to form a stiffening portion between the ed es of the shoe, and which are secured to at er facin each ogher with the cylindrica flanges edge to e ge.

7. A brake shoe comprising twoseparately-formed parts, each having a cylindrical flange forming at least part of the liningcarrying portion of the shoe and continued at one edge to form an integral stiffening portion, the two parts being secured together facing each other and with said edges forming the oposite side edges of the shoe, in.

ges of thecombination with a stiffening part between stiffening portions and of said lining-carrying lately-formed parts, each having a cylind'ri- 1 cal flange forming at least part of the liningcarrying portionof the shoe and continued integral stiffening port-ion integrally at one edge to form an portion and an inclined connecting the flange and said portion, the two parts being secured together, facing each other and'with sai-d edges forming the opposite side edges of the shoe, in combination with a stiffening part between and secured to said stiffenin portions and engaging the inside of said fining-carrying portion and crossing the space defined by the diverging inclined portions of said parts.

. 9. A brake shoe comprising two separately-formed parts',ea c h having a, cylindrical flange and a stiffening portion integrally connected therewith alon one edge, the two rately-formed parts, each having a cylindriw 'to the stiffening portions and engaging the inside' surfaceformed by the cy in r cal flange and a stiffening portion integrally connected therewith along one edge, the two parts being secured=together with the. cylindrical flanges edge to edge, in combination with a. stiffening part between and secured ical flanges substantially at the joint between the two cylindrical flanges.

11. A brake shoe comprising two separately-formed parts, each having a cylindrical flange nd a stiffening portion integrally connected t erewith along one edge, together with an inclined bracing portion connecting the flange and the stiffening portion, the

two parts being secured together with the cylindrical flanges edge to edge, in combination with a stiffening part' between and secured to the. stiffening portions and en- Y gaging the inside surface formed by the cy- 'lindrical flanges and crossing the space defined by said inclined bracing portions.

"12. A brake shoe comprising twoparts,

each having a cylindrical flange and a stitfen- 1 ing portion integrally connected therewith along one outer side edge of the shoe, and a curved plate engaging the insideof the cylindrical shoe portion formed by the cylin- "di'ical flanges, the two stifi'ening portions being displaced into engagement with opposite sides of said late and secured thereto.

13. A brake siioe having a plane flange formed with an opcningto be mounted on a pivot, in combination with a dished washer secured thereto in a manner to be mounted on said pivot and to form with the wall of said opening a air of spaced pivot bearings. 14. A brake s we having a plane stitlenin web formed with an opening to be mounted on a pivot,-in combination with a pair of oppositely dished washers secured thereto on opposite sides in a manner to be mounted. on said pivot and to form with the wall of said opening three spaced pivot bearings.

1523A brake shoe having a plane stlflenm web formed with an opening to be mounte on a pivot, in combination with a pair of oppositely dished washers secured thereto on opposite sides in a manner to. be mounted on said-pivot and to form a pair of spaced pivot bearings.

16. A brake ct prising a pair of over-,

lapping shoes, one having a pair of spaced webs, and the other having a stiffening web straddled by saidspaced webs and having secured on its-opposite sides a; pair of opposltely dished washers engaging the inner faces of said spaced webs. i

17. A hollow brake shoe including two separately-formed concave and outwardlycylindrical members facing toward each other and secured together by inner and outer joints extending lengthwise of the shoe each of said members providing a part of the friction face of-the shoe.

18.;A hollow brake Shoe including two separately-formed concave and outwardlycyllndrical members facing toward each other and secured to other by inner and outer joints extending en'gthwise of the shoe, the outer joint being arranged substantially in the center of the friction face of the shoe.

19. A hollow brake shoe including two separately-formed concave and outwardlycylindrical members arranged with their concave faces. toward each other, andeach of which members forms the art of the shoe .on its side of the central p ane of the shoe,

and which members are secured together by joints extending lengthwise of the shoe.

20. A hollow brake shoe including two separately-formed concave members, each with a cylindrical flange and astiflenin portion, and which are secured together wit their concave faces toward each other and with the stiffening portions secured to ether and with said flanges secured edge to e ge.

21. A hollow brake shoe including two separately-formed concave members, eachwith a cylindrical flange and a stifien-ing portion, and which are secured together with their concave faces toward eachother and j with the stiffening. portions secured together and with said flanges securedv ed e to edge, together with a reinforcin mem er secured between said concave mem ers. 22. A hollow brake shoe including "two separately-formed wncave members, at least one being outwardly-cylindrical and each having a stiflening portion, and which are secured together with their concave faces toward each other and with the stiflening por tions secured'togethen' 23. A hollow brake shoe including two separately-formed concave members, each with a cylindrical flange and a stiffening portion, and which are secured together with their concave facestoward each other and with the stiffening portions secured together and with said flanges secured edge to edge,

together with a reinforcing member secured between said concave members, the stiffening portions being depressed toward the cylindrical flanges at intervals to form seats for lining fastenings.

24:. A two piece cylindrical outer friction face with a joint down its center, and having its hollow body hollow brake shoe with a J with a cylindrical flange and a stifl'enin portion, and which are secured together with their concave faces toward each other and 15 with the stiffening portions secured together and with said flanges secured edge to edge, friction lining overlying said flanges, and fastenings for the lining passing through the flanges and terminating within the out'- 20* line of the hollow shoe.

In testimony whereof, I have hereunto signed my name.

LUDGER E. LA BRIE. 

